Patent GB-189817148-A (GB)
Title: Improvements in Web Cutting and Delivering Mechanism for Printing Machines.
Inventor: NEWTON HENRY EDWARD
Filed: 1898-08-09
Granted: 1898-09-17
Abstract: 17,148. Newton, H. E., [Hoe, R.]. Aug. 9. Delivery apparatus; cutting-apparatus.-Relates to cutting and delivery apparatus for web printing- machines, whereby the web is severed and the end carried forward without being punctured or injured, two or more sheets being associated, if desired, for folding and delivery together. Fig. 1 shows an end elevation of a cutting, associating, and delivery arrangement, and Fig. 7 an enlarged section of the cutting and gripping mechanism. Two cylinders or carriers A, B are geared together and driven by suitable gearing, the web P being passed to them over a roller 30 and through rollers 50, 51. The carrier A is provided with two sets of nipping-jaws, each consisting of a fixed member 6, Fig. 7, and a spring member 9, and the carrier B has a similar pair of nipping-jaws 3, 5. Adjacent to the jaws 3, 5 is a fixed cutting-blade 2, and a sliding spring block or buffer 15 which nips the web against the carrier A, while it is cut by the blade 2 entering the recess 4 in the cutting-block 16. Between the jaws 6, 9 is a radially-sliding tucking-blade 8, and a similar blade 7 slides between the jaws 3, 5. On these blades are shoulders o which operate to open the jaws when the blades are partially protruded. When fully protruded, the tucking-blade pushes the severed end of the web or sheets into the opposite nipping-jaws, as the two come opposite to each other in the rotation of the carriers. The tucking-blades are operated by cams, portions of which are movable so that two or more sheets may be collected on the cylinder B by the blades 8 being protruded as shown in Fig. 7. The collected sheets are tucked by the blade 7 into the jaws 6, 9 of the cylinder A, and are delivered or folded together. The folding-blades, operated by crossheads 34, 35 and cams, fold the sheets into the rollers 52, 53. When a sheet or sheets is received by a pair of nipping- jaws 3, 5 or 6, 9, the blade 7 or 8 between such jaws is fully withdrawn, so that the spring jaw may close on the sheet. A modified arrangement of cutting, folding, and delivery mechanism is described, the cutting and nipping mechanism of which is shown in section in Fig. 16, A' and B' being the rotating cylinders or carriers. The carrier B<1> has a fixed cutting-blade 113 and spring block or buffer 114, which blade operates in a recess 102 in a cutting-block 103 on the carrier A'. Working in recesses in the cutting-block 103 are gripper fingers 106 on a shaft 110, which nip the severed end of the web against a seat 109. The shaft 110 is so placed that the ends of the fingers 106 do not move outside the peripheral surface of the carrier A<1>, and consequently they can make their sweep under the web W. The severed end of the web is moved to, and held on, the seat 109 until the grippers 106 close on it, by a set of fingers 107 moving in recesses in the buffer 114 with their ends close to the cutting-blade. The shafts 12, 110 of the grippers are operated by cams &c. Two or more sheets may be associated on the carrier A'. From the carrier A<1> the sheet or associated sheets are folded into nipping-jaws on the carrier B, and from the latter are transferred to a delivery cylinder.